Texas Instruments TSB43AA82IGGW

Overview

TSB43AA82IGGW from Texas Instruments is an IEEE 1394a-2000–compliant integrated PHY and link-layer controller for SBP-2 and DPP applications. It features dual 400-Mbps 1394 ports, 3.3-V supply with internal 1.8-V regulation, 176-pin BGA (GGW) industrial-grade packaging (–40°C to 85°C), and three independent FIFOs: 1512-byte async command, 4728-byte DMA, and 504-byte Config ROM/LOG.

For engineers reviewing the TSB43AA82IGGW datasheet, TSB43AA82IGGW pinout, TSB43AA82IGGW application, or TSB43AA82IGGW equivalent, key selection criteria include IEEE 1394a compliance, industrial temperature range, SBP-2 transaction automation (ORB/page table fetch), ATAPI/SCSI mode support, and dual-port BGA implementation for high-volume CE storage peripherals.

Technical Context

The TSB43AA82IGGW integrates a two-port 400-Mbps physical layer and full link-layer controller in a single die, enabling direct connection to host microcontrollers via 8-/16-bit asynchronous/synchronous or multiplexed bus interfaces up to 40 MHz. It implements automated IEEE 1394 configuration ROM read responses and split-transaction retry control via configurable time-limit registers.

Its SBP-2 engine supports up to four initiators with fully automated ORB fetching, linked-command handling, and page-table management-eliminating firmware overhead for SCSI-over-1394 storage bridging. The DPP mode leverages the asynchronous receive FIFO as a segment data unit register for large print-data transfers.

Key Specifications

Pinout & Package

TSB43AA82IGGW uses a 176-terminal microstar BGA (GGW) package with 0.8-mm ball pitch, 13.5 mm × 13.5 mm body size, and JEDEC-standard moisture sensitivity level (MSL) rating. Pinout is defined in TI SLLA204 (Rev. JUNE 2006), Section 5 "Signal Descriptions" and Figure 5–1 "Pin Assignments".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1394 link-layer controller applications.

Compared with TSB43AA82IGGW, the TSB43AA82GGW offers identical performance at lower cost but lacks industrial temperature resilience, while the TSB43AA82PGE provides equivalent functionality in a rework-friendly LQFP-enabling faster validation and simplified thermal management at the expense of board area and signal integrity margin.

Availability

TSB43AA82IGGW is available at Aetrix Electronics and suitable for external hard drive enclosures, digital camcorder bridges, network-attached storage adapters, and Direct Print Protocol printer controllers requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for TSB43AA82IGGW includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.

The TSB43AA82IGGW belongs to TI's IEEE 1394 interface product line, engineered specifically for high-volume consumer electronics requiring certified FireWire 400 connectivity with minimal host processor overhead and robust SBP-2/DPP protocol acceleration.

FAQ

What is the operating temperature range of the TSB43AA82IGGW?

The TSB43AA82IGGW is rated for industrial operation from –40°C to +85°C. This extended range is achieved through process and packaging optimizations validated per TI's qualification standards and distinguishes it from the commercial-grade TSB43AA82GGW. The TSB43AA82IGGW maintains full IEEE 1394a-2000 compliance and FIFO performance across this entire range without derating.

Does the TSB43AA82IGGW support both SBP-2 and DPP protocols simultaneously?

Yes, the TSB43AA82IGGW supports SBP-2 and DPP concurrently via separate hardware engines. Its SBP-2 transaction manager handles up to four initiators with automated ORB and page-table fetching, while its DPP mode repurposes the asynchronous receive FIFO as a segment data unit register. Both protocols operate independently under shared 1394 PHY resources without conflict or firmware arbitration.

Is the TSB43AA82IGGW pin-compatible with other variants in the TSB43AA82 family?

The TSB43AA82IGGW shares identical pinout and ball assignment with the TSB43AA82GGW (same GGW BGA package), making them mechanically and electrically interchangeable on PCBs designed for either variant. However, it is not pin-compatible with the TSB43AA82PGE (144-pin LQFP), which uses a completely different footprint, pad layout, and thermal pad configuration.

What host bus interface modes does the TSB43AA82IGGW support?

The TSB43AA82IGGW supports three host bus configurations: 8-bit or 16-bit asynchronous, 8-bit or 16-bit synchronous, and 8-bit or 16-bit multiplexed address/data. All modes operate up to 40 MHz and interface directly to standard microcontrollers without external wait-state generators or bus translators. The TSB43AA82IGGW's AS#/DS# and RD#/WR# signals provide precise timing control for each mode.

How does the TSB43AA82IGGW handle IEEE 1394 configuration ROM access?

The TSB43AA82IGGW implements fully automated configuration ROM read responses in hardware. When a remote node issues a read request to the Config ROM address space, the TSB43AA82IGGW retrieves the stored ROM image from its internal 504-byte Config ROM/LOG FIFO and returns valid data without host CPU involvement. This feature is mandatory for IEEE 1394 self-identification and topology enumeration.